1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 7194897 27 * @summary JSR 292: Cannot create more than 16 instances of an anonymous class 28 * @author Robert Field 29 * @library /lib/testlibrary 30 * @compile -XDignore.symbol.file ManyNewInstanceAnonTest.java 31 * @build jdk.testlibrary.* 32 * @run main ClassFileInstaller ManyNewInstanceAnonTest 33 * @run main/othervm -Xbootclasspath/a:. -Xverify:all ManyNewInstanceAnonTest 34 * @run main/othervm -Xbootclasspath/a:. -Xverify:all -Dsun.reflection.noInflation=true ManyNewInstanceAnonTest 35 */ 36 import java.io.ByteArrayOutputStream; 37 import java.io.InputStream; 38 import sun.misc.Unsafe; 39 40 public class ManyNewInstanceAnonTest { 41 42 static final int REPS = 20; 43 static final Class<?> klass = ManyNewInstanceAnonTest.class; 44 45 public static void main(String[] args) throws Exception { 46 Class<?> c = Unsafe.getUnsafe().defineAnonymousClass(klass, readClassFile(), null); 47 for (int i = 0; i < REPS; ++i) { 48 System.out.printf("%d: %s\n", i, c.newInstance()); 49 } 50 System.out.println("Passed."); 51 } 52 53 private static byte[] readClassFile() throws Exception { 54 try (InputStream in = klass.getResourceAsStream(klass.getSimpleName() + ".class"); 55 ByteArrayOutputStream out = new ByteArrayOutputStream()) 56 { 57 int b; 58 while ((b = in.read()) != -1) { 59 out.write(b); 60 } 61 return out.toByteArray(); 62 } 63 } 64 }